When this service may help
- Air pressure drops while parked
- System is slow or unable to build pressure
- Suspension will not rise
- Audible leak at tractor or trailer
Do not crawl beneath an unsecured vehicle
Air suspension can drop suddenly. Inspection below the vehicle requires correct support, isolation and competent working practices.
Help isolate the circuit
Note whether the fault changes with the service brake, parking brake, suspension controls, trailer connection or engine speed. Pass observations to the technician; do not improvise a bypass.
Searches people run for this
HGV air leak repair near me · truck air pressure fault · lorry air system mechanic
Frequently asked questions
Can a leaking airline be repaired roadside?
Some accessible line or coupling defects may be repairable, but circuit, damage and location determine the safe response.
Is an air leak always a brake fault?
No. It may involve suspension, auxiliary equipment or controls, but pressure loss can still affect vehicle safety.